The cause and elimination of high temperature of t

Reasons and elimination of excessive temperature of the motive

I. reasons for excessive temperature of the motive in the above content

1 The cooling system leaks or the cooling water is insufficient; 2. The indication of water temperature gauge is inaccurate or out of order; 3. The cooling system has too much scale and poor heat dissipation effect; 4. The radiator shield or radiator core ventilation duct is blocked by sundries, resulting in poor heat dissipation; 5. The water pump and fan belts are too loose or broken; 6. The water pump is damaged, the fan blade is installed reversely or deformed, and the wind ring is damaged; 7. The thermostat is damaged in the closed position of the main valve; 8. The engine runs overloaded for a long time and the oil supply time is too late

II. Troubleshooting of excessive engine temperature

when the engine has the fault of excessive water temperature during operation, pay attention to observe the fault phenomenon, find out the cause and eliminate it. First, check whether the water temperature gauge is out of order. If it is inaccurate or out of order, replace it; Then check whether the water tank is short of water and whether the water inlet pipe and radiator are broken and leaking. In addition to direct observation from the outside, you can also check the leaking part by pumping air. The leaking part of the radiator can be repaired by tin welding. If a radiator pipe is seriously broken, the two ends can be flattened and blocked. If a slight water leakage is found during work, it can be blocked with soap and repaired after parking. If it is not for the above reasons, it is necessary to further check whether the engine shell has cracks. The waterstop Lilians will also focus on developing new innovative products to check whether they are damaged and whether the water pump drain hole is leaking. Finally, check whether the exhaust valve of the radiator cap fails, and replace it if it fails

if the problem is not cooling water leakage, the fault should be analyzed and eliminated in two cases. 1. Sudden high water temperature. First, check whether the radiator is overheated. If the radiator temperature is too high, it means that the cylinder gasket is damaged. At this time, pay attention to check whether the upper plane of the engine body and the joint surface of the cylinder head are seriously warped and deformed. If it is deformed, it should be repaired in time. If the temperature of the radiator is not high, it indicates that the cooling water circulation is poor. Check whether the fan belt is broken or seriously slipping. If it is normal, check whether the radiator outlet pipe is sucked and whether the inner hole is blocked by delamination. Find out the cause and eliminate it. The emergency method is to put an appropriate large spring support in the sucked pipe. Then check whether the expansion cylinder of the thermostat is broken, and replace it if it is broken. If the thermostat is normal, it means that the water pump is damaged, and the water pump should be carefully inspected and repaired. 2. Non sudden high water temperature. For the phenomenon that the temperature is not suddenly too high, the engine speed should be increased to observe whether the water inlet is turned over, and pay attention to whether a large amount or a small amount of water is turned over. If a large amount of water is turned over, and if there is a gap between the screw rods, the experimental data made in the future will show that the radiator temperature, whether it is a portal frame structure or a single arm frame structure, is divided into digital display and microcomputer controlled uneven, indicating that some cooling pipes are blocked, which should be paid more attention to in the cold winter. When a small amount of water is turned over at the water inlet and the engine temperature is low before and high after, it indicates that the water distribution pipe has been damaged or blocked, and it should be replaced in time. If it is not for the above reasons, it may be that there is too much scale in the cooling system and the water channel is not smooth. If the water filling port does not turn over, the appearance of the cooling system and the mechanical part of the engine should be carefully checked and analyzed

first, check whether the shutter is closed or the opening is insufficient, and whether the fan rotates normally. If everything is normal and the engine is still overheated, check the fan air volume. If the air volume is insufficient, the angle of the fan blade should be adjusted, and the blade head should be properly bent or changed

if the engine is still overheated under normal conditions of the cooling system, the reasons for use should be considered. In short, the causes of engine overheating are various, and the above methods can be flexibly used to check and eliminate according to the specific situation